Details

Autor(en) / Beteiligte

• Kharraz, O.M.
• Connelly, M.J.
• Supa'at, A.S.M.
• Abas, A.F.
• Alresheedi, M.T.
• Mahdi, M.A.

Titel

Influence of co- and counter-propagating light on the phase-mismatch effect in semiconductor optical amplifiers

Ist Teil von

• Optics and laser technology, 2020-05, Vol.125, p.106032, Article 106032

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Phase-mismatch-FWM in SOAs due to difference btw. TE/TM conf. factors is observed.•The intensity of co- and counter-FWM conjugates reveals sinc-like responses.•Co-propagation nondegenerate FWM shows coherence lengths of 1600 and infinite GHz.•Counter-propagation nondegenerate FWM shows coherence lengths of 800 and 400 GHz. The phase-mismatch effect, caused by the difference in confinement factor between transverse electric (TE) and transverse magnetic (TM) modes, has not been observed in semiconductor optical amplifiers (SOAs) and is not typically accounted for. In this work, we investigate the characteristics of the phase-mismatch four wave mixing (FWM) effect, which occurs in SOA devices. Our results reveal a sinc-like response in the intensity of co- and counter-FWM conjugates as a function of the detuning shift between interacting beams. It is demonstrated that the coherence lengths between the phase match/mismatch cycles differ between co- and counter-propagating nondegenerate FWM experiments and depend on the amplified TE/TM polarizations of interacting waves aligned with respect to the birefringent axes of SOAs. The coherence lengths between each phase match/mismatch cycle in co-propagation experiments are found to be 1600 and infinite GHz, respectively, compared to 800 and 400 GHz found in counter-propagation experiments.